|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIII
||Microstructure and Wear Behavior of Laser Clad Multi-layered Fe-based Amorphous Coatings on Steel Substrates
||Tanaji Paul, S. Habib Alavi, Sourabh Biswas, Sandip P Harimkar
|On-Site Speaker (Planned)
Dilution from substrate and resulting crystallization pose major challenges to utilizing laser processing techniques for the production of amorphous alloy coatings for steel. In this work, single and multi-layered (2 and 3 layers) coatings of Fe48Cr15Mo14Y2C15B6 amorphous alloy were applied to steel substrates via laser cladding. XRD patterns indicated partial retention of the amorphous phase along with the formation of oxide and carbide phases. One and two layers of powder yielded relatively sound coating with surface hardness ~650 VHN while cracks and voids were observed for that with three layers although hardness increased to ~1100 VHN, nearly equal to that of the as-sintered powders. In a reverse trend, wherein coatings with one and two layers exhibited lower weight loss during wear cycle, that with three layers showed aggravated wear. Understanding the behavior of these coatings can lead to the improvement of processing leading to their acceptance in number of applications.
||Planned: A print-only volume